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Abstract: (Elsevier)
With singly-tagged D¯ samples selected from the data collected at and around 3.773 GeV with the BESII detector at the BEPC collider, we have measured the branching fractions for the inclusive K± decays of D+ and D0 mesons, which are BF(D+→K−X)=(24.7±1.3±1.2)% , BF(D+→K+X)=(6.1±0.9±0.4)% , BF(D0→K−X)=(57.8±1.6±3.2)% and BF(D0→K+X)=(3.5±0.7±0.3)% , respectively. We have also measured the branching fractions for the inclusive semileptonic decays of D+ and D0 mesons to be BF(D+→e+X)=(15.2±0.9±0.8)% and BF(D0→e+X)=(6.3±0.7±0.4)% . These yield the ratio of their partial widths to be Γ(D+→e+X)/Γ(D0→e+X)=0.95±0.12±0.07 .Note:
- 6 pages, 5 figures
- 14.40.Gx
- 12.38.Qk
- 13.25.Gv
- electron positron: colliding beams
- electron positron: annihilation
- psi(3770): electroproduction
- D: pair production
- D: hadronic decay
- K: charge
- D: semileptonic decay
References(12)
Figures(5)